... noise statistics, noise acquisition, noise frequency analysis2. built-in 1/1 frequency spectrum filter, RS-232C connector3. equipped with printer to ... 94dB, 1kHzDisplay 54mm×42mm LCD digital display, analog watch handDisplay measuring mode, measuring time, clock, 1/1 center frequencyBacklight display functionPower 5 ... 178mm×81mm×31mmWeight 0.4kg , printer: 0.41kg digital sound frequency analysis meter